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Question:
(a) Besides privacy, what other security functions does Pretty Good Privacy (PGP) provides?
(b) What is the Post Office Protocol (POP) used for? Why is it important that POP uses authentication, whereas the Simple Mail Transfer Protocol (SMTP) does not?
(c) When worms attack the e-mail client, the e-mail servers (the Mail Transfer Agent (MTA) and the Mail Delivery Agent (MDA)) get overwhelmed as well. Explain why.
(d) What do you meant by spam? Blocking lists are typically used to prevent spam. Discuss the effectiveness of using blocking list. How do ISPs prevent their clients from sending spam?
(e) What do you understand by the term Virtual Private network (VPN)? Describe how IPSec can be used to implement a VPN.
(f) Compare and contrast IPSec and SSH.
Question: a) How many bits per second can be sent on a noiseless 4 MHz channel if four-level digital signals are used? b) If a binary signal is sent over a 3 KHz channel who
Question 1: Describe the functioning of cloud computing. Question 2: Discuss on "Platform as a Service". Question 3: Discuss the steps involved in effective co
#Under what circumstances would the use of a SecSDLC be more appropriate than an SDLC?
QUESTION: (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. Give the source MAC address for the frame in hexadecimal; the sourc
QUESTION (In this question, you will need to use the ISO 27001:2005 and ISO 27002:2005 standards) For each of the situations below, comment on the following: 1. Mention
VIRTUAL PACKETS These data packets serve same reason in Internet as frames on LAN. Every packet has a header. Routers, which are normally gateways, transfer packets between ph
You have been asked to setup a remote temperature sensing system for an electric furnace. The system consists of a sensor unit which feeds an analogue signal to a PCM encoder. The
INTRODUCTION TO SECURITY AND PERSONNEL When implementing information security, there are several human resource issues that should be addressed. They are • Positioning and n
Question: (a) What is the use of digital certificate? (b) What is meant by a hierarchical trust model in a Public Key Infrastructure? How does the Pretty Good Privacy (PG
QUESTION (a) Compare and contrast phishing and pharming attacks (b) Nowadays, web defacement may not always be visual (i) Explain web defacement (ii) What is the main
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